Screw in fan



FIG. 1 is a perspective view of my new design for a fan.

FIG. 2 is a plan view from the top of the fan shown in FIG. 1.

FIG. 3 is an elevational view from the front of the fan shown in FIG. 1.

An elevational view from the back of the fan would be a mirror image to that shown in FIG. 3.

FIG. 4 is a plan view from the bottom of the fan shown in FIG. 1; and,

FIG. 5 is an elevational view from the side of the fan shown in FIG. 1.

An elevational view from the side opposite to that shown in FIG. 5, would be a mirror image thereof. 

CLAIM The ornamental design for a screw in fan, as shown and described. 